40418240 has 28 divisors (see below), whose sum is σ = 96246696. Its totient is φ = 16167168.

The previous prime is 40418239. The next prime is 40418243. The reversal of 40418240 is 4281404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40418243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62834 + ... + 63473.

It is an arithmetic number, because the mean of its divisors is an integer number (3437382).

Almost surely, 2^40418240 is an apocalyptic number.

40418240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40418240 is an abundant number, since it is smaller than the sum of its proper divisors (55828456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40418240 is a wasteful number, since it uses less digits than its factorization.

40418240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126324 (or 126314 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 40418240 is about 6357.5341131605. The cubic root of 40418240 is about 343.1830261310.

Adding to 40418240 its reverse (4281404), we get a palindrome (44699644).

The spelling of 40418240 in words is "forty million, four hundred eighteen thousand, two hundred forty".